4542 results about "Capillary Tubing" patented technology

To solve the problem of a conventional high pressure resistance response of a channel body, which has been addressed by expansion of a brazing area and substitution with a high strength material, the first is handled by expanding the brazing area, while there is a problem in the aspect of material costs and processing in the latter, in which a problem of standardization of the channel body cannot be solved since various channel bodies are provided for different applications, a sheet brazing material is frequently used for a brazing surface, and productivity is hindered by characteristics of the sheet brazing material.SOLUTION: A high pressure resistance response is handled by two kinds of means of free expansion of a brazing area and a structure optimal for brazing effectively utilizing a capillary phenomenon to a maximum. For standardization, various kinds of channels are formed by using an integrated channel body with which a high-strength channel plate made of a metal sheet is overlapped, thereby eliminating restrictions in the standardization or in the aspect of design of the channel body.SELECTED DRAWING: Figure 1, Figure 15

The present disclosure is directed to various embodiments and methods for producing a hollow-core optical fiber. The methods may include heating a hollow-core preform having a cross-sectional area greater than 0.0013 m2. The hollow-core preform may include a substrate with an inner surface. The interior cavity may include a tube in contact with the inner surface. The method may also include drawing the hollow-core optical fiber from the hollow-core preform. The drawing may include elongating the tube to a capillary which may include a contact length with the inner surface of the substrate. The contact length may be a linear distance from a first contact point of the capillary with the inner surface of the substrate to a second contact point of the capillary with the inner surface of the substrate. The contact length may be less than or equal to 20% of a capillary outer diameter.

The invention provides a probe type multi-parameter ocean sensor based on a seven-core optical fiber. The device is characterized by comprising a broadband light source, a seven-core optical fiber fan-in and fan-out device, a circulator, a spectrograph and a seven-core optical fiber probe, wherein the seven-core optical fiber probe is formed by sequentially welding two capillary tubes with different inner diameters on a seven-core optical fiber. A probe fiber end is ground into a cone frustum, the grinding surface of the cone frustum is plated with a nanogold film, a fiber end capillary tube is filled with transparent elastic colloid, the side faces of three side cores of a seven-core optical fiber are polished and then plated with metal nanofilms, and a fiber grating is written into a central core of the seven-core optical fiber corresponding to the polishing and grinding area of the side cores. Therefore, measurement of salinity, pressure intensity, temperature, heavy metal concentration and biochemical molecules in an ocean sensing application scene can be realized. The optical fiber sensor is flexible and tight in structure and can be widely applied to the optical fiber sensing application fields such as ocean exploration, water body safety and biomedicine.

The invention discloses a water storage and drainage system capable of keeping slope stability. The water storage and drainage system comprises a water drainage pipe assembly and an automatic water supplementing assembly. The drainage pipe assembly comprises a plurality of transverse assembly type pipes, a plurality of oblique assembly type pipes and a plurality of plastic capillary pipes, the transverse assembly type pipes and the oblique assembly type pipes are perpendicularly communicated in a staggered mode, and the transverse assembly type pipes are communicated with the plastic capillary pipes at the corresponding positions. A sand cushion layer and a perlite layer are laid on the slope surface of the side slope; the automatic water supplementing assembly comprises a water pumping machine, a plurality of water supplementing pipes and a plurality of wireless temperature and humidity sensors. A water outlet of the water pumping machine is connected with the water supplementing pipes through a water conveying pipeline. The water pumping machine is provided with an intelligent automatic sensing system; the water storage and drainage system capable of keeping the stability of the side slope further comprises a plurality of assembly type concrete sash beams laid on the perlite layer, and the water supplementing pipe is connected with the rotating spray heads. A soil dressing layer used for planting cold-resistant water-retaining vegetation is laid in the planting area of the fabricated concrete sash beam. The water content of the side slope can be effectively adjusted and controlled, so that the stability of the side slope is improved.

The invention relates to the field of microfluid chemical synthesis, and discloses a method for preparing gold nanoparticles based on two-phase flow microfluid control. The method comprises the following steps: 1) converging a gold precursor water phase, a reducing agent water phase and an organic phase in a micro-fluidic chip at 0-25 DEG C to form water-in-oil liquid drops; (2) conveying the fluid to a mixing area channel of a micro-fluidic chip, and carrying out instantaneous nucleation reaction to form a gold nanoparticle prototype; 3) conveying the fluid into a capillary reactor, and further nucleating, growing and curing the gold nanoparticle prototype; and (4) the fluid is subjected to phase splitting, and a gold nanoparticle solution is obtained. A three-in-one micro-fluidic chip is adopted, process parameters are optimized, and a gold precursor and a reducing agent are wrapped in an organic phase before reaction to form water-in-oil liquid drops, so that on one hand, the situation of adsorption and scaling of the inner wall of a channel can be avoided, and on the other hand, the heat and mass transfer efficiency of a material can be improved through the generated liquid drops; and the uniformity of a reaction nucleation environment is ensured.

The invention belongs to the technical field of optical fiber sensing, and discloses a high-temperature-resistant and high-pressure-resistant multi-parameter integrated sensor and system based on optical fiber dislocation welding, and the sensor comprises a packaging main body, and the center of the packaging main body is provided with a center hole and a cavity which are used for accommodating a transmission optical fiber. The tail end of the transmission optical fiber is sequentially connected with a temperature detection device and a pressure / sound detection device which are positioned in the cavity; the temperature detection device comprises a fiber bragg grating; the pressure / sound detection device comprises a single-mode fiber, a multimode fiber, a first hollow capillary fiber and a second hollow capillary fiber which are connected in sequence; the axes of the first hollow capillary optical fiber and the second hollow capillary optical fiber are connected in a staggered manner to form an open structure. The pressure / sound-temperature multi-parameter composite in-situ synchronous measurement device realizes composite in-situ synchronous measurement of multiple parameters of pressure / sound-temperature, has the advantages of high temperature resistance, small size and high test precision, and has wide application prospects in the fields of aerospace, petroleum metallurgy, environmental monitoring and the like.

The utility model discloses a micro-flow measuring device, which comprises a weighing balance; the liquid collecting container is arranged on the weighing balance; the liquid outlet pipe comprises a horizontal liquid outlet section, and a liquid outlet is formed in the end part of the horizontal liquid outlet section; the capillary receiving tube comprises a horizontal tube section and a vertical tube section which are communicated with each other, the horizontal tube section is horizontally aligned with the horizontal liquid outlet section, a liquid receiving opening is formed in the end part of the horizontal tube section, and a liquid discharging opening is formed in the end part of the vertical tube section; a first distance is formed between the end face of the liquid receiving opening and the end face of the liquid outlet, so that liquid discharged from the liquid outlet is sucked into the liquid receiving opening at intervals, and the liquid discharging opening drips the liquid into the liquid collecting container at intervals. According to the utility model, the problem that a liquid column is easily formed between the liquid outlet pipe and the capillary channel or the distance between the liquid outlet pipe and the capillary channel is too large in the prior art due to vertical butt joint of the liquid outlet pipe and the capillary channel is solved.

The invention relates to the technical field of gas viscosity testing, in particular to a gas viscosity testing device and method suitable for multiple working conditions, the gas viscosity testing device comprises a constant temperature box, a capillary tube, a driving mechanism, a first cylinder and a second cylinder, and the first cylinder and the second cylinder have the same structure and are arranged oppositely. The device is reasonable and compact in structure, and the coaxial equal-diameter double cylinders which are oppositely mounted are adopted, so that two problems in a gas viscosity capillary method test can be solved: firstly, the gas state is adjusted, and the piston rod moves left and right by utilizing the driving mechanism, so that the volume of a rodless cavity of the cylinder is changed; in this way, the pressure increasing or reducing function can be achieved through the driving mechanism and the air cylinder, and therefore gas reaches the set pressure. The gas state is kept constant in the testing process, the first air cylinder and the second air cylinder are communicated with the capillary tube to form a closed testing loop in the testing process, the gas flow in the testing loop can be adjusted by changing the movement speed of pistons of the two air cylinders, and the requirement for conducting multiple sets of tests in the same gas state is met.

A hollow-core optical fiber including from 5 to 8 spaced apart cladding elements defining a hollow-core region, each including (a) a first capillary and (b) a second capillary disposed within the first capillary. For each of the cladding elements, (i) the second capillary is offset from the first capillary by an angle within a range of from 20 degrees to 120 degrees and (ii) a ratio of an outer diameter of the second capillary to an outer diameter of the first capillary is within a range of from 0.47 to 0.85. The hollow-core optical fiber exhibits confinement loss of less than 0.056 dB / km for electromagnetic radiation of 850 nm, less than 0.028 dB / km for electromagnetic radiation of 1310 nm, less than 0.204 dB / km for electromagnetic radiation of 1550 nm, and less than 0.016 dB / km for electromagnetic radiation of 2400 nm.

The invention discloses a drainage plate for an unsaturated soil roadbed in a cold region. The drainage plate comprises a hydrophobic layer, a drainage layer and an anti-freezing layer which are sequentially arranged in parallel, the hydrophobic layer is made of a hydrophobic material; the drainage layer comprises at least two layers of capillary structures and water-absorbing fibers filled between the capillary structures, the outer layer is a vertical honeycomb tube, the inner layer is a horizontal honeycomb tube, and the radius is gradually reduced from outside to inside; the capillary tube structure adsorbs pore water in unsaturated soil through capillary action, and the water-absorbing fibers drive water to be discharged out of the roadbed through water content difference; and the anti-freezing layer is made of a low-temperature-resistant polymeric material. According to the drainage plate, through the capillary action of the middle three-dimensional drainage layer, pore water dispersed in unsaturated soil is actively adsorbed, water is directionally discharged in combination with gravity, and the problem that a traditional drainage pipe is low in efficiency in the unsaturated soil is solved; meanwhile, through double-layer protection of the hydrophobic layer and the anti-freezing layer, a moisture seepage path is blocked, soil particles are prevented from invading, and a drainage channel is prevented from being blocked.

A diagnostic test device to perform a test on a biological or environmental sample is provided. In one aspect, the diagnostic test device includes a chamber configured to receive a fluid from a sample preparation reservoir at a first section of the chamber, and a plurality of spaced apart valleys along an inner surface of the at least one chamber. Each of the plurality of spaced apart valleys include a curved cross-section and is configured to promote flow of the fluid toward a second section of the at least one chamber.

The invention belongs to the technical field of free radical detection, and provides an in-situ online detection method for hydroxyl free radicals in a hydrocarbon-water system high-temperature action process. The method comprises the following steps: preparing a capillary reaction kettle, preparing a capillary injector, preparing a test solution, and injecting a sample: sequentially injecting an aqueous solution and a hydrocarbon mixed solution containing a paramagnetic trapping agent into the capillary reaction kettle, so that the hydrocarbon mixed solution is discontinuous in short-column-shaped sections in the aqueous solution, a'hydrocarbon-water-hydrocarbon-water-hydrocarbon-water... 'multi-hydrocarbon-water 'interface is completed; sample detection and image analysis. According to the invention, hydrocarbons and a water solution to be detected are sealed by using a fused quartz capillary tube and a high-pressure valve, and multiple sections of hydrocarbon-water interfaces are sealed in a quartz capillary tube system, so that the oil-water interfaces of the hydrocarbon-water system in the capillary tube are densely arranged near detection points; the distribution density of oil and water droplets near an interface under a high-temperature condition and the generation of a large amount of free radicals are increased, and the signal-to-noise ratio of effective signals is improved.

The invention belongs to the technical field of petroleum engineering, and discloses a shale gas reservoir apparent permeability prediction method and a related device, and the method comprises the steps: obtaining data; judging a gas flow state; establishing a shale gas mass migration model; establishing apparent permeability models of capillary tubes with different sizes; obtaining a shale reservoir apparent permeability model; carrying out transfer learning; according to the method, the influence of the reservoir effective stress and the shale water saturation on the permeability is comprehensively considered, the neural network model is adopted to obtain the effective flow radius, and the prediction accuracy is improved; by introducing the permeability correction coefficient, dynamic correction of the original permeability value is realized, so that the actual permeability can be reflected more accurately; according to the method, by adopting transfer learning, a specific type of shale reservoir apparent permeability model is transferred to other conditions, so that the model can be used for predicting the permeability of different types of shale reservoirs, and the universality is effectively improved.

The invention provides a multi-mode hollow-core anti-resonance optical fiber, and relates to the technical field of optical fibers, and the multi-mode hollow-core anti-resonance optical fiber comprises a hollow outer layer tube and a plurality of cladding capillary tubes arranged on the inner wall of the outer layer tube; each cladding capillary tube comprises a circular tube, an elliptical tube and an anti-resonance plate, and the elliptical tube is nested in the circular tube through the anti-resonance plate and is coaxially arranged with the circular tube. In the technical scheme provided by the invention, the elliptical tube is nested in the circular tube by the anti-resonance plate, and the elliptical tube and the circular tube are coaxially arranged, so that a nested integrated cladding capillary tube is formed, and the multi-mode hollow-core anti-resonance optical fiber with the structure can reduce bending loss and limiting loss of the fiber core in a high-order mode.

The invention relates to a defrosting refrigerating system and a refrigerator and a control method thereof, and belongs to the technical field of refrigerating systems.The defrosting refrigerating system comprises a compressor, a three-way pipe is connected to an outlet of the compressor, and the outlet of the compressor is connected to the first end of the three-way pipe; the condensation assembly inlet is connected to the second end of the three-way pipe; the throttling assembly inlet is connected to the condensation assembly outlet and comprises a first capillary tube and a second capillary tube which are connected in parallel. The first evaporator inlet is connected to the first capillary outlet, and the first evaporator is installed between the outer side of an inner container of the refrigerator and a foaming layer; the second evaporator is mounted in the box on the inner side of the refrigerator liner, an inlet of the second evaporator is simultaneously connected with an outlet of the second capillary and a third end of the three-way pipe, and an outlet of the first evaporator and an outlet of the second evaporator are combined and connected to an inlet end of the compressor; and a normally closed electromagnetic valve is also arranged between the second evaporator and the three-way pipe. According to the defrosting refrigerating system, the manufacturing cost and maintenance difficulty of the system can be reduced, and meanwhile the problem of high failure rate is avoided.

The utility model discloses a device for preparing a double-droplet microsphere. The device comprises a fluid injection unit, a liquid injection unit and a control unit, the micro-fluidic chip comprises a cover glass, one side of the cover glass is provided with a dispensing needle a, the dispensing needle a is connected with an internal phase glass capillary tube, the internal phase glass capillary tube is partially nested in an intermediate phase glass capillary tube, the intermediate phase glass capillary tube is partially nested in an external phase glass capillary tube, and the external phase glass capillary tube is connected with the external phase glass capillary tube. A dispensing needle b is vertically arranged above one end, which is overlapped with the inner phase glass capillary, of the intermediate phase glass capillary, and a dispensing needle c is vertically arranged above one end, which is overlapped with the intermediate phase glass capillary, of the outer phase glass capillary; and a micro-droplet collection unit. According to the utility model, through the coaxially arranged glass capillary tube and the dispensing needle head communicated with the glass capillary tube, the double-droplet microsphere is prepared, meanwhile, the groove is formed in the dispensing needle head, so that the construction of a coaxial glass capillary tube micro-fluidic chip is facilitated, the preparation equipment is simple, and the operation is simple.

The invention provides a dilution refrigeration system not limited by gravity, and relates to the field of extremely-low-temperature dilution refrigeration. The dilution refrigeration system not limited by gravity comprises a first-stage pre-cooling device, a second-stage pre-cooling device, a capillary type dilution refrigeration device, a liquid pool circulating device, a dilution recovery device and a dilution air inlet device, wherein the first-stage pre-cooling device comprises a vacuum cover, a GM pulse tube refrigerator, a 40K-stage heat exchanger, a 40K-stage cold shield, a transition heat exchanger and a 4K-stage heat exchanger. Compared with a conventional dilution refrigeration system, the dilution refrigeration system not limited by gravity has the advantages that due to the fact that the multistage capillary tube heat exchanger is adopted, surface tension can be used for replacing gravity to fix a concentrated phase interface and a dilute phase interface, and refrigeration temperature is directly transmitted to a hot end component in a capillary tube winding mode and the like; the interference of a zero-gravity or anti-gravity environment on the conventional dilution refrigeration process is avoided from the source, the influence of the vibration of the refrigeration unit on the hot end is favorably reduced, and part of high-precision application occasions with strict requirements on free installation and vibration interference is met.

A high-brightness and high-power fiber laser adopts an oscillator structure and comprises a pumping module, a high-reflectivity fiber grating, a gain fiber, a low-reflectivity fiber grating and a cladding light filter, the gain fiber is a rare earth ion doped ZBLAN fiber which takes ZBLAN as a matrix material and is of an all-solid-state anti-resonance structure, and the low-reflectivity fiber grating is a rare earth ion doped ZBLAN fiber which is of an all-solid-state anti-resonance structure. The gain optical fiber comprises a fiber core area, a cladding area, an anti-resonance area and a coating layer, the anti-resonance area is composed of at least one capillary tube set, each capillary tube set comprises a plurality of capillary tubes, the capillary tubes in each capillary tube set are annularly arranged on the periphery of the fiber core area with the fiber core area as the center, and the cladding layer is arranged on the cladding layer. The matrix material in each capillary tube and the matrix material in the cladding region are the same and are ZBLAN, and the matrix material ZBLAN in the fiber core region is doped with dysprosium ions. According to the invention, the rare earth doped all-solid-state anti-resonance optical fiber is adopted as the gain optical fiber, so that high-brightness, high-power and high-efficiency output can be realized.

The utility model discloses a vertical liquid storage tank pump inlet pipeline structure which comprises a pump inlet pipeline, a horizontal pipeline and a slope pipeline which are sequentially connected, the pump inlet pipeline is vertically arranged downwards along a storage tank pipeline nozzle, and the horizontal pipeline is connected to the lower end of the pump inlet pipeline. The gradient pipeline is arranged above the horizontal pipeline, the lower end of the gradient pipeline is connected with the horizontal pipeline, a stop valve is arranged on the gradient pipeline, the upper end of the capillary pipeline is connected with a storage tank, and the lower end of the capillary pipeline extends to the inner bottom of the horizontal pipeline. The utility model aims to solve the technical problems in the prior art, and provides a vertical liquid storage tank pump inlet pipeline structure which can keep low-temperature liquid in a horizontal pipeline circulating and thoroughly block the risks of dry evaporation and hydrocarbon precipitation at the dead end of the pipeline.

The invention relates to an injection system, an injection method and a control method for medical capillary polishing, and the injection system comprises a first liquid storage pipe used for storing magnetorheological fluid; the first three-way connector is connected with the first liquid storage tank through a first pipeline; the first pump is connected with the first three-way joint through a second pipeline; the second pipeline comprises a vertical pipe body which is partially vertically arranged, and the space between the first pump and the vertical pipe body is filled with a gas section; the capillary tube is connected with the first three-way connector through a third pipeline; the first pinch valve is installed on the first pipeline and the third pipeline and used for cutting off the first pipeline or the third pipeline. The particle settling volume in the injection system can be reduced, the machining precision is improved, and the service life of equipment is prolonged.

The utility model relates to a spray head for spraying a target object. The spray head comprises spray head units, and each spray head unit comprises a liquid supply unit used for supplying to-be-sprayed liquid to a flow channel; the flow channel is communicated with the flow channel connecting port of each capillary tube in the capillary tube group; the capillary tube group comprises a plurality of capillary tubes, each capillary tube comprises a main body part, a flow channel connecting port and a liquid outlet end, the liquid outlet end is located at one end of the main body part, a liquid outlet is formed in the liquid outlet end, and the shape and the size of the liquid outlet are configured to enable to-be-sprayed liquid to be output from the liquid outlet in a continuous output mode. According to the utility model, the manufacturing cost is lower, flying liquid discharge can be avoided, and the liquid spraying efficiency can be improved.

The invention discloses a three-fluid three-dimensional flow guide spinning head, electrostatic spinning equipment and a batch preparation method of three-chamber embedded parallel structure nanofibers, three different fluids are synchronously guided into a high-voltage electrostatic field by simultaneously arranging a plurality of nozzle outlets with combined structures, and a plurality of complex combined nozzle outlets are used as macroscopic templates, so that the three-chamber embedded parallel structure nanofibers are prepared under the high-voltage electrostatic field. Through interaction of a high-voltage electrostatic field and fluids, batch preparation of the three-chamber embedded and column-structured nanofibers by multi-fluid common electrospinning is realized. The three spinning solutions are guided to a common outlet through the first series of metal capillary tubes, the second series of metal capillary tubes and the spinning solution insulating container respectively; the first series of metal capillary tubes and the second series of metal capillary tubes are respectively dispersed from respective capillary tube gathering inlets, penetrate through the interior of the spinning solution insulating container to the bottom of the spinning solution insulating container and vertically penetrate out to form a plurality of outlets which are parallel in pairs; a through hole outlet is formed in any parallel outlet at the bottom of the spinning solution insulating container to form a common outlet of the three spinning solutions, and the three-chamber embedded and arrayed nano structure is directly prepared in batches in a single step.

The utility model discloses an efficient cooling-water machine which comprises a machine shell, and an installation cavity is formed in the machine shell. The water tank is provided with a water return connector and a water outlet connector. The heat exchanger is provided with a first heat exchange pipe and a second heat exchange pipe, one end of the first heat exchange pipe is communicated with the water return connector, and the other end of the first heat exchange pipe is communicated with a pipeline of external equipment; the refrigeration assembly comprises a compressor, a condenser, a drying filter and a capillary tube, an outlet of the compressor communicates with an inlet of the condenser, an outlet of the condenser communicates with an inlet of the drying filter, an outlet of the drying filter communicates with one end of the capillary tube, and the other end of the capillary tube communicates with one end of the second heat exchange tube. The other end of the second heat exchange pipe communicates with an inlet of the compressor. Heat exchange between water in the water tank and a refrigerant is achieved through the first heat exchange pipe and the second heat exchange pipe of the heat exchanger, cooling is conducted through cold water in the water tank, and the cooling amount and the cooling efficiency are improved.

The utility model discloses a novel efficient energy storage air cooling air conditioning system which comprises a compressor, a three-phase heat exchanger I, a three-phase heat exchanger II, an outer fan, an inner fan, a capillary tube, a water pump, an expansion kettle, a drying tank and an air bellow. A first cavity and a second cavity which are independent are formed in the air bellow, an inner fan and a three-phase heat exchanger II are arranged in the first cavity, and an outer fan and a three-phase heat exchanger I are arranged in the first cavity; on the basis, a refrigerant circulation system and a cooling water circulation system are constructed. According to the air cooling system, the refrigerant circulation system or the cooling water circulation system can be selected to work in time according to the temperature of the external environment and the return air temperature of the air bellow, so that the heat dissipation requirement of the air cooling system under the condition that the environment temperature is high can be met, and meanwhile the use frequency of the compressor is reduced when the environment temperature is low; power consumption is reduced and system efficiency is improved.

A heat transfer apparatus including a housing and a wick structure is provided that is configured to dissipate heat from a heat source. The housing defines a chamber that holds working fluid. The wick structure includes a body and pores defined by the body. The heat transfer apparatus defines an evaporator section configured to evaporate the working fluid using heat from a heat source and a condenser section configured to dissipate heat carried by the evaporated working fluid through condensation of the evaporated working fluid. The wick structure has a repeatable, configurable, and controlled geometry optimized to move the working fluid from the condenser section to the evaporator section via capillary action. The body of the wick structure may have a gyroidal geometry. Associated methods are also provided.

An annular structure for an electronic flame off (EFO) wand of a wire bonder is positioned beneath a capillary of the wire bonder. The annular structure provides uniform heat to a bond wire extending from the capillary to form a free air ball (FAB). Because heat is uniformly applied to the bond wire, the FAB is uniformly formed and is centered with respect to the capillary. The FAB is then bonded to a bond pad of a substrate. Because the FAB was uniformly formed and is centered on the capillary, the FAB will also be centered on the bond pad.

The invention relates to a bioelectronic surgical suture for suture tension monitoring, the surgical suture comprises a cannula and a conductive material, the cannula is a hollow capillary tube, and the conductive material is arranged in the cannula through perfusion and is subjected to first laser scanning treatment after perfusion; a micro-nano structure is manufactured on the outer wall of the sleeve through second laser scanning. According to the principle of friction nanometer power generation, the tension of the surgical suture causes the change of the contact area between the suture and tissue and the change of an output electric signal in the collection process, the tension of the surgical suture can be reversely deduced, and the purpose of monitoring the surgical suture tension is achieved. The operation line is a self-powered sensor, and an external power supply is not needed. The operation line can provide different quantitative feedbacks according to different suturing modes and suturing parts, and is combined with clinical suturing experience of doctors to assist in establishing a tension quantitative model, so that the doctors are helped to optimize operation procedures, postoperative complications are reduced, and wound healing is promoted.

The invention belongs to the field of image spectrum detection, and particularly relates to a high-precision detection device and method for a liquid meniscus contour in a capillary tube. Comprising a telecentric lens, an industrial camera, a displacement platform, a light source, a capillary tube and a culture dish, the industrial camera, the capillary tube and the culture dish are installed on different displacement platforms respectively, the light source is provided with a rotary telescopic rod and can move in all directions, when the liquid meniscus contour in the capillary tube is shot, the light source, the meniscus of the capillary tube and the industrial camera are adjusted to be aligned to the same horizontal plane, and on the basis of the telecentric imaging principle, according to the light refraction principle, the liquid meniscus contour in the capillary tube is obtained. And deriving a distortion correction function of the meniscus contour in the capillary tube. According to the invention, the industrial camera and the telecentric lens are matched for use, the problem of shape distortion caused by object distance change is avoided, and the difficulty of image distortion correction is reduced. The meniscus contour distortion correction function derived based on the telecentric imaging principle can accurately calculate the actual value of the meniscus contour and restore the actual meniscus contour.

The utility model discloses aviation lubricating oil viscosity measuring equipment, and belongs to the technical field of lubrication detection. Aviation lubricating oil viscosity measuring equipment comprises a measuring instrument body and further comprises a constant-temperature bin and a heating bin which are arranged in a constant-temperature bathtub, the constant-temperature bin is communicated with the heating bin through a channel, one end of a water pump is communicated with the heating bin, and the other end of the water pump is communicated with the constant-temperature bin; the bathtub cover is detachably arranged on the constant-temperature bathtub, a fixing seat is arranged on the bathtub cover, a mounting groove is formed in the fixing seat, and arc-shaped plates used for clamping capillary tubes are arranged on the inner walls of the two sides of the mounting groove in a sliding mode respectively; circulating heating of liquid in the heating bin and the constant-temperature bin can be achieved through the water pump, the liquid can be evenly heated, the heating efficiency can be improved, the two sets of arc-shaped plates are symmetrically arranged in the fixing base, the axes of the arc-shaped plates are parallel to the axes of the capillary tubes, the axes of the capillary tubes can be kept perpendicular, inclination is avoided, and the service life of the capillary tubes is prolonged. The measurement result is influenced.

The invention discloses a micro-fluidic chip, a sensing electrode and a sensor of wearable equipment, belongs to the technical field of electrochemical method testing, and solves the technical problem that an existing wearable sensor cannot improve the sensitivity and accuracy of sweat component detection. The micro-fluidic chip comprises a substrate layer, a channel layer and a chip cover layer which are attached in sequence, the substrate layer comprises a sweat inlet and a cavity, the channel layer comprises a sweat absorbing opening, a micro-channel, a detection area, a capillary pump, a stop valve and a ventilation opening which are communicated in sequence, the sweat inlet is communicated with the sweat absorbing opening, and the cavity is communicated with the detection area. The sensing electrode is of a four-layer structure, and a working electrode located on a working electrode layer is manufactured through a chemical process. In a sensor of the wearable equipment, a sensing electrode is embedded in a cavity of a micro-fluidic chip and is used for being in contact with sweat flowing into the cavity, so that the content of glucose, sodium ions and cortisol in the sweat is detected. The method is suitable for the technical field of wearable sweat detection and can be applied to research and development of wearable detection equipment.